Enhancing Impregnability in Reinforced Composite Membrane Using Greener Dispersion

• DOI: 10.1149/ma2024-01341788mtgabs
• Publication Date: 2024-08-19T15:30:28Z
• Authors: Hyun Jin Park; Youngjoon Lim; Ju Sung Lee; Jungho KIM; Jisuk Baek; Albert S Lee; Hee-Tak Kim; Jun Young Kim

Perfluorosulfonic acid (PFSA) polymer commonly offer high ionic conductivity, chemical and physical properties, rapid response, making them widely used in energy conversion technologies like fuel cell water electrolysis. Industrial commercialization of the electrolyte membranes for electrolysis depends not only on sufficient electrochemical performance but also requires gas barrier properties dimensional stability. To improve these selection an appropriate dispersion solvent optimization its composition ratio are very important. However, PFSA limits types solvents due to unique structure, which consist combining a hydrophilic perfluorovinyl ether side chain with sulfonate groups onto hydrophobic tetrafluoroethylene backbone. Here, we have introduced new greener mixture system fabrication PFSA-reinforced composite compared it conventional systems. Our produced more densely packed support layer relaxed anisotropy reinforced membrane. As result, compressive strength tensile strain increased, possible compensate shortcomings caused by support. Also, this increased impregnability resulted relatively low permeability conductivity. The was comparable those prepared using NMP-based solvent. These results demonstrate method preparing dispersions membrane their potential replace hazardous processes.